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Foster

Foster quick couplers set the standard in pneumatic and hydraulic connections. Part of the ZSI-Foster line, Foster couplers and plugs cover the full range of industrial interchanges and body sizes in steel, brass, and stainless construction. Built for reliable, repeatable connections in air and fluid systems. Shop the full Foster range below.

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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 656.00
$ 656.00 - $ 656.00
$ 656.00
$ 524.00
$ 524.00 - $ 524.00
$ 524.00

Foster 3R4905, 3/8" Hansen RL Interchange Air Coupler x 3/8" NPT, 3FRL Series, Steel

Rugged air-line connections built for the jobsite. The Foster 3R4905 is a 3/8" coupler from the 3FRL Series, which interchanges with Hansen 3/8" 3R...

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$ 656.00
$ 656.00 - $ 656.00
$ 656.00
$ 524.00
$ 524.00 - $ 524.00
$ 524.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 317.00
$ 317.00 - $ 317.00
$ 317.00
$ 253.00
$ 253.00 - $ 253.00
$ 253.00

Foster 3L60, 3/8" Hansen RL Interchange Air Plug x 1/2" Hose ID, 3FRL Series, Steel

Rugged air-line connections built for the jobsite. The Foster 3L60 is a 3/8" plug from the 3FRL Series, which interchanges with Hansen 3/8" 3RL cou...

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$ 317.00
$ 317.00 - $ 317.00
$ 317.00
$ 253.00
$ 253.00 - $ 253.00
$ 253.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 313.00
$ 313.00 - $ 313.00
$ 313.00
$ 250.00
$ 250.00 - $ 250.00
$ 250.00

Foster 3L60G, 3/8" Hansen RL Interchange Air Plug Ball Check x 1/2" Hose ID, 3FRL Series, Steel

Rugged air-line connections built for the jobsite. The Foster 3L60G is a 3/8" plug from the 3FRL Series, which interchanges with Hansen 3/8" 3RL co...

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$ 313.00
$ 313.00 - $ 313.00
$ 313.00
$ 250.00
$ 250.00 - $ 250.00
$ 250.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass Save 20% Save %
$ 398.00
$ 398.00 - $ 398.00
$ 398.00
$ 319.00
$ 319.00 - $ 319.00
$ 319.00

Foster 3L58, 3/8" Hansen RL Interchange Air Plug x 1/4" Hose ID, 3FRL Series, Steel

Rugged air-line connections built for the jobsite. The Foster 3L58 is a 3/8" plug from the 3FRL Series, which interchanges with Hansen 3/8" 3RL cou...

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$ 398.00
$ 398.00 - $ 398.00
$ 398.00
$ 319.00
$ 319.00 - $ 319.00
$ 319.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 396.00
$ 396.00 - $ 396.00
$ 396.00
$ 317.00
$ 317.00 - $ 317.00
$ 317.00

Foster 3L57, 3/8" Hansen RL Interchange Air Plug x 3/4" Female NPT, 3FRL Series, Steel

Rugged air-line connections built for the jobsite. The Foster 3L57 is a 3/8" plug from the 3FRL Series, which interchanges with Hansen 3/8" 3RL cou...

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$ 396.00
$ 396.00 - $ 396.00
$ 396.00
$ 317.00
$ 317.00 - $ 317.00
$ 317.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 313.00
$ 313.00 - $ 313.00
$ 313.00
$ 250.00
$ 250.00 - $ 250.00
$ 250.00

Foster 3L59G, 3/8" Hansen RL Interchange Air Plug Ball Check x 3/8" Hose ID, 3FRL Series, Steel

Rugged air-line connections built for the jobsite. The Foster 3L59G is a 3/8" plug from the 3FRL Series, which interchanges with Hansen 3/8" 3RL co...

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$ 313.00
$ 313.00 - $ 313.00
$ 313.00
$ 250.00
$ 250.00 - $ 250.00
$ 250.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 248.00
$ 248.00 - $ 248.00
$ 248.00
$ 199.00
$ 199.00 - $ 199.00
$ 199.00

Foster 3L56, 3/8" Hansen RL Interchange Air Plug x 3/4" Male NPT, 3FRL Series, Steel

Rugged air-line connections built for the jobsite. The Foster 3L56 is a 3/8" plug from the 3FRL Series, which interchanges with Hansen 3/8" 3RL cou...

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$ 248.00
$ 248.00 - $ 248.00
$ 248.00
$ 199.00
$ 199.00 - $ 199.00
$ 199.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 141.00
$ 141.00 - $ 141.00
$ 141.00
$ 113.00
$ 113.00 - $ 113.00
$ 113.00

Foster 3L59, 3/8" Hansen RL Interchange Air Plug x 3/8" Hose ID, 3FRL Series, Steel

Rugged air-line connections built for the jobsite. The Foster 3L59 is a 3/8" plug from the 3FRL Series, which interchanges with Hansen 3/8" 3RL cou...

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$ 141.00
$ 141.00 - $ 141.00
$ 141.00
$ 113.00
$ 113.00 - $ 113.00
$ 113.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 313.00
$ 313.00 - $ 313.00
$ 313.00
$ 250.00
$ 250.00 - $ 250.00
$ 250.00

Foster 3L55G, 3/8" Hansen RL Interchange Air Plug Ball Check x 1/2" Female NPT, 3FRL Series, Steel

Rugged air-line connections built for the jobsite. The Foster 3L55G is a 3/8" plug from the 3FRL Series, which interchanges with Hansen 3/8" 3RL co...

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$ 313.00
$ 313.00 - $ 313.00
$ 313.00
$ 250.00
$ 250.00 - $ 250.00
$ 250.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 253.00
$ 253.00 - $ 253.00
$ 253.00
$ 202.00
$ 202.00 - $ 202.00
$ 202.00

Foster 3L55, 3/8" Hansen RL Interchange Air Plug x 1/2" Female NPT, 3FRL Series, Steel

Rugged air-line connections built for the jobsite. The Foster 3L55 is a 3/8" plug from the 3FRL Series, which interchanges with Hansen 3/8" 3RL cou...

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$ 253.00
$ 253.00 - $ 253.00
$ 253.00
$ 202.00
$ 202.00 - $ 202.00
$ 202.00
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Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 331.00
$ 331.00 - $ 331.00
$ 331.00
$ 266.00
$ 266.00 - $ 266.00
$ 266.00

Foster 3L52G, 3/8" Hansen RL Interchange Air Plug Ball Check x 3/8" Male NPT, 3FRL Series, Steel

Rugged air-line connections built for the jobsite. The Foster 3L52G is a 3/8" plug from the 3FRL Series, which interchanges with Hansen 3/8" 3RL co...

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$ 331.00
$ 331.00 - $ 331.00
$ 331.00
$ 266.00
$ 266.00 - $ 266.00
$ 266.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 324.00
$ 324.00 - $ 324.00
$ 324.00
$ 259.00
$ 259.00 - $ 259.00
$ 259.00

Foster 3L54G, 3/8" Hansen RL Interchange Air Plug Ball Check x 1/2" Male NPT, 3FRL Series, Steel

Rugged air-line connections built for the jobsite. The Foster 3L54G is a 3/8" plug from the 3FRL Series, which interchanges with Hansen 3/8" 3RL co...

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$ 324.00
$ 324.00 - $ 324.00
$ 324.00
$ 259.00
$ 259.00 - $ 259.00
$ 259.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 113.00
$ 113.00 - $ 113.00
$ 113.00
$ 90.00
$ 90.00 - $ 90.00
$ 90.00

Foster 3L52, 3/8" Hansen RL Interchange Air Plug x 3/8" Male NPT, 3FRL Series, Steel

Rugged air-line connections built for the jobsite. The Foster 3L52 is a 3/8" plug from the 3FRL Series, which interchanges with Hansen 3/8" 3RL cou...

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$ 113.00
$ 113.00 - $ 113.00
$ 113.00
$ 90.00
$ 90.00 - $ 90.00
$ 90.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 194.00
$ 194.00 - $ 194.00
$ 194.00
$ 155.00
$ 155.00 - $ 155.00
$ 155.00

Foster 3L54, 3/8" Hansen RL Interchange Air Plug x 1/2" Male NPT, 3FRL Series, Steel

Rugged air-line connections built for the jobsite. The Foster 3L54 is a 3/8" plug from the 3FRL Series, which interchanges with Hansen 3/8" 3RL cou...

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$ 194.00
$ 194.00 - $ 194.00
$ 194.00
$ 155.00
$ 155.00 - $ 155.00
$ 155.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 231.00
$ 231.00 - $ 231.00
$ 231.00
$ 185.00
$ 185.00 - $ 185.00
$ 185.00

Foster 3L51, 3/8" Hansen RL Interchange Air Plug x 1/4" Female NPT, 3FRL Series, Steel

Rugged air-line connections built for the jobsite. The Foster 3L51 is a 3/8" plug from the 3FRL Series, which interchanges with Hansen 3/8" 3RL cou...

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$ 231.00
$ 231.00 - $ 231.00
$ 231.00
$ 185.00
$ 185.00 - $ 185.00
$ 185.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 92.00
$ 92.00 - $ 92.00
$ 92.00
$ 74.00
$ 74.00 - $ 74.00
$ 74.00

Foster 3L50, 3/8" Hansen RL Interchange Air Plug x 1/4" Male NPT, 3FRL Series, Steel

Rugged air-line connections built for the jobsite. The Foster 3L50 is a 3/8" plug from the 3FRL Series, which interchanges with Hansen 3/8" 3RL cou...

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$ 92.00
$ 92.00 - $ 92.00
$ 92.00
$ 74.00
$ 74.00 - $ 74.00
$ 74.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 540.00
$ 540.00 - $ 540.00
$ 540.00
$ 433.00
$ 433.00 - $ 433.00
$ 433.00

Foster 2R4904, 1/4" Hansen RL Interchange Air Coupler x 1/2" Hose ID, 2FRL Series, Steel

Rugged air-line connections built for the jobsite. The Foster 2R4904 is a 1/4" coupler from the 2FRL Series, which interchanges with Hansen 1/4" 2R...

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$ 540.00
$ 540.00 - $ 540.00
$ 540.00
$ 433.00
$ 433.00 - $ 433.00
$ 433.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 554.00
$ 554.00 - $ 554.00
$ 554.00
$ 443.00
$ 443.00 - $ 443.00
$ 443.00

Foster 2R4704, 1/4" Hansen RL Interchange Air Coupler x 1/2" Hose ID, 2FRL Series, Steel

Rugged air-line connections built for the jobsite. The Foster 2R4704 is a 1/4" coupler from the 2FRL Series, which interchanges with Hansen 1/4" 2R...

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$ 554.00
$ 554.00 - $ 554.00
$ 554.00
$ 443.00
$ 443.00 - $ 443.00
$ 443.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 536.00
$ 536.00 - $ 536.00
$ 536.00
$ 429.00
$ 429.00 - $ 429.00
$ 429.00

Foster 2R4804, 1/4" Hansen RL Interchange Air Coupler x 3/8" Hose ID, 2FRL Series, Steel

Rugged air-line connections built for the jobsite. The Foster 2R4804 is a 1/4" coupler from the 2FRL Series, which interchanges with Hansen 1/4" 2R...

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$ 536.00
$ 536.00 - $ 536.00
$ 536.00
$ 429.00
$ 429.00 - $ 429.00
$ 429.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 515.00
$ 515.00 - $ 515.00
$ 515.00
$ 413.00
$ 413.00 - $ 413.00
$ 413.00

Foster 2R4504, 1/4" Hansen RL Interchange Air Coupler x 1/2" Male NPT, 2FRL Series, Steel

Rugged air-line connections built for the jobsite. The Foster 2R4504 is a 1/4" coupler from the 2FRL Series, which interchanges with Hansen 1/4" 2R...

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$ 515.00
$ 515.00 - $ 515.00
$ 515.00
$ 413.00
$ 413.00 - $ 413.00
$ 413.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 526.00
$ 526.00 - $ 526.00
$ 526.00
$ 422.00
$ 422.00 - $ 422.00
$ 422.00

Foster 2R4604, 1/4" Hansen RL Interchange Air Coupler x 3/8" Hose ID, 2FRL Series, Steel

Rugged air-line connections built for the jobsite. The Foster 2R4604 is a 1/4" coupler from the 2FRL Series, which interchanges with Hansen 1/4" 2R...

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$ 526.00
$ 526.00 - $ 526.00
$ 526.00
$ 422.00
$ 422.00 - $ 422.00
$ 422.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 491.00
$ 491.00 - $ 491.00
$ 491.00
$ 394.00
$ 394.00 - $ 394.00
$ 394.00

Foster 2R4304, 1/4" Hansen RL Interchange Air Coupler x 3/8" Male NPT, 2FRL Series, Brass/Steel

Rugged air-line connections built for the jobsite. The Foster 2R4304 is a 1/4" coupler from the 2FRL Series, which interchanges with Hansen 1/4" 2R...

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$ 491.00
$ 491.00 - $ 491.00
$ 491.00
$ 394.00
$ 394.00 - $ 394.00
$ 394.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
Save 20% Save %
$ 484.00
$ 484.00 - $ 484.00
$ 484.00
$ 387.00
$ 387.00 - $ 387.00
$ 387.00

Foster 2R4204, 1/4" Hansen RL Interchange Air Coupler x 3/8" Female NPT, 2FRL Series, Brass/Steel

Rugged air-line connections built for the jobsite. The Foster 2R4204 is a 1/4" coupler from the 2FRL Series, which interchanges with Hansen 1/4" 2R...

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$ 484.00
$ 484.00 - $ 484.00
$ 484.00
$ 387.00
$ 387.00 - $ 387.00
$ 387.00
Save 20% Save %
Foster BLH1B, 1/8" ISO-B Hydraulic Coupler x 1/8" Female NPT, ISO-B Series, Ball Lock, Brass
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$ 480.00
$ 480.00 - $ 480.00
$ 480.00
$ 385.00
$ 385.00 - $ 385.00
$ 385.00

Foster 2R4104, 1/4" Hansen RL Interchange Air Coupler x 1/4" Male NPT, 2FRL Series, Steel

Rugged air-line connections built for the jobsite. The Foster 2R4104 is a 1/4" coupler from the 2FRL Series, which interchanges with Hansen 1/4" 2R...

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$ 480.00
$ 480.00 - $ 480.00
$ 480.00
$ 385.00
$ 385.00 - $ 385.00
$ 385.00
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